Digital I/O Connector And Pin Out - Measurement Computing miniLAB 1008 User Manual

miniLAB 1008 User's Guide

Digital I/O connector and pin out

Digital I/O connections are made to the DB37 connector on the top edge of the miniLAB 1008. This connector
provides connections for 24 digital lines (
output terminals (
USB +5V Out
Digital I/O connections (Port A0 through Port C7)
The 24 digital I/O pins (
47 kilohm (kΩ) pull-up resistor and is configured as an input by default. If needed, the miniLAB 1008 can be
factory configured to provide pull-down resistors.
Caution! Port A0 through Port C7 have no overvoltage/short circuit protection. Do not exceed the voltage
limits or you may damage the pin or the miniLAB 1008. To protect these pins, you should use a
series resistor.
Pin Signal Name
1 n/c
2 n/c
3 Port B7
4 Port B6
5 Port B5
6 Port B4
7 Port B3
8 Port B2
9 Port B1
10 Port B0
11 GND
12 n/c
13 GND
14 n/c
15 GND
16 n/c
17 GND
18 USB +5V Out
19 GND
Refer to the "Digital connector
digital I/O connector.
Caution! The
USB +5V Out
or you may damage the miniLAB 1008 and possibly the computer.
Port A0
). Refer to Figure 3-2
, and
Port A0-A7 Port B0-B7
37
19
Figure 3-2. DB37 Digital I/O connector
Table 3-2. DB37 connector pin out
cabling" section for descriptions of cables that are compatible with the DB37
pins on the DB37 connector are outputs. Do not connect an external 5 V supply
to ), six ground connections (
Port C7
and Table 3-2 for the DB37 connector pin out.
) are TTL-level compatible. Each pin has a
Port C0-C7
20
1
Pin Signal Name
20 USB +5V Out
21 GND
22 Port C7
23 Port C6
24 Port C5
25 Port C4
26 Port C3
27 Port C2
28 Port C1
29 Port C0
30 Port A7
31 Port A6
32 Port A5
33 Port A4
34 Port A3
35 Port A2
36 Port A1
37 Port A0
3-3
Functional Details
), and two power
GND